Taylor, G. W. 1893. “Land and Fresh Water Shells in the Rocky Moun- 
tains.” Nautilus, vol. 7, pp.. 85-86, Dec., 1893. 
(Records fourteen species of terrestrial mollusks from Laggan, 
Alberta.) 
1895. “The Present Condition of Canadian Conchology.” Ottawa 
Naturalist, vol. 8, pp. 143-159, Feb., 1895. 
(Contains a valuable bibliography.) 
1895a. “The Land and Freshwater Shells of Alberta.” Ottawa 
Naturalist, vol. 9, pp. 173-178, Dec., 1895. 
(Records Vertigo ovata and Pupa simplex from Laggan, and Conulus 
fulvus, Patula striatella, and Succinea avara from near Macleod and 
Little Bow river, Alberta.) 
Vanatta, E. G. 1906. “British Columbia Shells.” Nautilus, vol. 20, p. 95. 
Dec., 1906. 
(Records twelve species of terrestrial mollusks from Field, B.C., and 
five from Banff, Alberta.) 
Whiteaves, J. F. 1905. “Some New Localities for Canadian Land and 
FreshWater Shells.” Ottawa Naturalist, vol. 19, pp. 169-171, 
Dec., 1905. 
(Records Vertigo modesta from Kananaskis, Alberta, and Sphyradium 
edentulum from Kananaskis, Alberta, and near Tobacco plains, B.C.) 
1906. “Notes on Some Land and Fresh Water Shells from British 
Columbia.” Ottawa Naturalist, vol. 20, pp. 115-119, Sept., 1906. 
(Records Polygyra ptycophora from Crowsnest pass and Trail, B.C.) 
NOTES ON THE SPECIES REPRESENTED 
Polygyra ptycophora (A. D. Brown 1870) 
1870. Helix ptycophora Brown, — Journ, de Conch., (3), vol. 10, p. 392 
(teste Binney). 
1885. Arionta townsendiana var. ptycophora Binney, — Man. Am. Landsh., 
pp. 128, 129, f. 102. 
1897. Polygyra townsendiana ptycophora Pilsbry, — Nautilus, vol. 11, p. 94 
(merely catalogued). 
1905. Polygyra ptycophora Dali, — Land and Freshwater Moll. Alaska, 
p. 25 (brief note). 
1906. Polygyra ptycophora Whiteaves, — Ottawa Nat., vol. 20, p. 119 
(recorded from Crowsnest pass and Trail, B.C.). 
Material Examined 
No. of 
Geol. Surv. 
spec. 
Locality 
Collector 
Date 
Cat, No. 
9 
Crowsnest pass, Elk river, B.C 
J. B. Tyrrell 
July 14, 1883.... 
2869 
35813—2 
